By William McGee New research has proved that Alexander von Humboldt was right in a claim he made nearly 200 years ago about the volcanic origin of the so-called Cali glass. The Cali glass is a potato-shaped black lump of glass slightly smaller than the size of an average open hand found near the city of Cali in western Colombia. […]
The post Magma Starter: New Proof That The Mysterious Cali Glass Really Did Come From Volcanoes first appeared on The Florida Star | The Georgia Star.
